Thanks Sven. I was actually talking about the new "replacING" component, not
the old replaced one. That replacing component had NULL as its Parent.
I found the solution discussed here:
http://apache-wicket.1842946.n4.nabble.com/Component-parent-null-after-replace-td1890602.html
The problem is it'
In other words, a Read-only panel is replaced with an Editable panel after
clicking "Edit":
panelReadOnly.replaceWith(
new panelEditable());
The panelEditable is found to have a NULL Parent ID afterwards. We need to
A panel that is created with replaceWith() earlier in the code turns out to
have a NULL parent. Is this normal, or are we supposed to keep links to the
parent? Any explanation? Is there ever a case when an embedded panel would
have a NULL parent? Thanks
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We have 2 cases where we need to display a matrix with checkboxes. In the
first case, the matrix has 3 columns, in the second, it has 8.
Both are working, and both were implemented as ListViews. But is there a way
to make this a Shared Component, with a more elegant design? The problem is
the HTML
Thanks Sven. Unfortunately we can't test without the CSS, otherwise it's all
just text. Any other ideas?
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Happily, we fixed this IE7-only problem.
All we had to do was add the top-level Repeater (containing all the panels)
to the Ajax target of the AjaxCheckbox triggering the visibility of these
child panels.
final AjaxCheckBox HQUserCheckBox = new AjaxCheckBox("HQUser", new
PropertyModel(formObject,
I don't know if anyone can help on this, but we ran into an IE7 issue (it
doesn't happen in IE8) where, when we toggle the visibility of some
MarkupContainers, the parent containers keep the original spacing they had
before, and don't suppress/expand properly to accommodate the new layout
(child pa
We have a shared Panel containing a dropdown.
The Panel is used on 2 different pages where each page has its own model as
an associated bean POJO class. My problem is that I have to pre-select the
dropdown in the panel to a certain index.
Normally, this is done by setting a Model value. I can't d
I found a solution, I'm passing the model Data Bean as a parameter to the
Panel in the constructor. Then I have access to it.
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Sen
Solved my problem - I had to set the output markup placeholder tag:
choiceVerPeriod.setOutputMarkupPlaceholderTag(true);
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Se
A selection in one of my Ajax dropdowns controls the visibility of another
dropdown. The code is very simple, and there are no other changes.
choiceVerType.add(new AjaxFormComponentUpdatingBehavior("onchange")
{
protected void onUpdate(AjaxRequestTarget target) {
if
(choiceVerType.getValue(
thanks
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To u
I just wanted to verify that getInput() doesn't work on a pre-disabled,
pre-populated DropDownChoice. getInput() only seems to work on enabled
dropdowns.
However, in my tests, getValue() works equally on both enabled/disabled
dropdowns. Is that true, or is there some other distinction?
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Actually, I figured it out. All the validators are getting called from the
inner form. But there was an NullPointerException in the first validator
which blocked all the others and I wasn't seeing them. Thanks for your help.
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Looking further at my code, I see that the custom validators from the inner
form DO get called; but the one that doesn't get called is
.setRequired(true). There is one component in the inner form which is
setRequired(true). And that validation is bypassed for some reason, although
all the other one
In the final HTML, my form is flattened out, there is only .
In my Wicket markup, the structure is:
PANEL -> FORM -> SecondPanel -> SecondForm
The main PANEL's FORM is being submitted, and validated. But the
"SecondForm" validation never gets called.
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I have a Panel (P1) which contains its own form (P1_F1).
The P1 panel also contains another panel inside itself, P1_A, which has its
own inner form (let's call it P1_A_F1).
Whenever the P_F1's validation is called, I also have to call the P1_A_F1
form validation. It doesn't get called automatical
YES. That was the exact issue. Thanks Sven.
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We have a Panel which contains a WebMarkupContainer which contains a ListView
repeater. The ListView repeats rows of 3 checkboxes; its populateItem is:
protected void populateItem(ListItem item) {
EDocsPermissionModel perm = item.getModelObject();
CheckBox cb1 = new CheckBox("view_flag", new
I found a solution, but I'm not sure it's the best/most elegant one, there is
a lot of messy code.
Upon selecting a certain AjaxCheckbox A in a ListView, I had to
1) disable AjaxCheckbox B
2) set its value to TRUE
and conversely, upon deselecting A, I had to (1) enable B and (2) set its
value to
I have a ListView which contains AjaxCheckboxes. (Each AjaxCheckbox is added
as a ListItem inside the ListView.)
I have the requirement that if a particular 'special' AjaxCheckbox is
selected, that should instantly select another particular AjaxCheckbox.
There is the overrideable method onUpdate(
Is there a way in Wicket to maintain different open pages that may be open in
different windows? For example, make updates from one page that affect
components on a different page.
(Note: we are using Wicket 1.4.7)
Thanks
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We have a dropdown which supports the NullValid property.
If we need to set its selection to Null manually, setModel(null) does not
seem to work. Should we set it to the first element of the backing model
(which is an KeyValueBean list)?
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We've heard that there is a fix for this available in Wicket 1.5.
However, we are stuck with Wicket 1.4.7 and cannot upgrade, for various
reasons. (We're also already using the AnnotationConfigWebApplicationContext
referred to in the previous post.)
Are there any other workarounds for this proble
Solution # 2 (setMarkupId) worked for us.
But Sven's Solution # 1 did not. Even after adding id="datefield"
wicket:id="datefield" to , the output still contained the
attribute id="datefield7" or something similar.
# 2 works for us, but I'm just wondering, is there something preventing # 1
from wo
Some of my components have the same static Wicket ID, but others look like
"field7" or "field5" while their ID is "field".
What is the rule governing whether an ID changes or not? And how can I
enforce a static ID? Thanks
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Never mind, the solution is easy: target.appendJavascript("alert('...')") at
the end of the Ajax code. Thanks
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I have a Button which performs some processing in Wicket, and at the very end
(not before), I need to show a JS popup alert box, with info from the
processing.
If I override protected IAjaxCallDecorator getAjaxCallDecorator() and add a
JS function to display the popup, that will fire immediately.
Thanks Sven. We don't have the below methods. We are using Wicket 1.4.7,
probably time to upgrade.
ListView#newItem(int, IModel)
see Component#onConfigure()
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Thanks Sven, let me clarify something in your code:
1) #newItem only has the signature newItem(int); there is no
newItem(int,IModel).
2) At the line "super.configure()" we get the error "The method configure()
is undefined for the type Check".
3) When you make references to "enabled", I assume it'
Here is the full code. This is an urgent problem so any advice much
appreciated.
ISSUE: Cannot enable/disable Checks in an Ajax update, their state remains
the same.
The Checks in the CheckGroup are supposed to change depending on a DropDown
change.
1) On Page Construction, all Checks in the Che
Paul: The Check is constructed *inside populateItem()*. This is already too
late, my output shows this happens after the Ajax ecent.
There is no way to construct a Check outside the populateItem, as far as I
know. This is how Checks are used:
CheckGroup cg = new CheckGroup("apps");
add(cg);
ListV
Paul, how would the model specify enabled/disabled status? The model contains
the values of the checkboxes.
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Igor,
The problem is, you do check.setEnabled(false) in *ListView.populateItem()*
for a CheckGroup control.
This method executes AFTER the Ajax update. It's too late to do
check.setEnable(false) on the render of the CheckGroup's ListView. We need
to disable/enable checkboxes in a CheckGroup as pa
How would you disable individual checkboxes in a CheckGroup?
With a CheckBoxMultipleChoice, it's easy: just override isDisabled(int
index) for the particular index you want to disable.
But we are using a CheckGroup, not CheckBoxMultipleChoice, because we need a
grid layout for our set of checkbox
Any help on this issue?
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Here is the code. As I said, we need to selectively enable/disable certain
checkboxes in a CheckGroup as part of some other component's Ajax event.
The issue is that the Ajax update is happening *before* we get a chance to
disable the checkbox in the ListView's populateItem(). So our checkboxes
ne
In other words, we set the individual check box's Enabled/Disabled in
ListView.populateItem().
This populateItem() call happens after the target.addComponent(listView),
even though in the code it precedes it.
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We have an Ajax method in some component where we have to update a CheckGroup
on the form. (The update is that some checkboxes get enabled/disabled.)
We construct a new ListView object, then addOrReplace it to the checkGroup;
and finally, after that, we add the CheckGroup to target.addComponent.
We have a Panel with a Form, and when anything changes on the form, we get
the browser message "Are you sure you want to navigate away from this page?
You have unsaved changes."
We need to suppress this warning for this Panel only (but not others). I
think there are some JS handlers for that, but
Never mind, I got it work. What I had to do was this:
public CharSequence decorateScript(CharSequence script) {
// TODO Auto-generated method
stub
return
super.decorateScript("var x = confirm('Are you
Hi, I overrode the IAjaxCallDecorator as below, but it still doesn't work:
there is no action when I click "OK" (although the popup appears). Do I need
to add something else? Thanks,
linkDelete = new AjaxButton("linkDelete") {
There was some error submitting the first post, so I'll resubmit:
We have an AjaxButton on which defaultFormProcessing = FALSE. I need to
attach a JS modifier to it with an alert box ("Are you sure? OK/Cancel"),
but when I add a SimpleAttributeModifier, I don't go through with the
onClick regardle
We have an AjaxButton with the following flag, to disable default form
processing (we don't want it to submit the form):
ajaxButton.setDefaultFormProcessing(false);
The problem is that we need to attach a JS alert box ("Are you sure?
OK/Cancel") when this button is clicked. If OK is clicked, we g
Disregard - problem solved.
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I have the below block of code. A Link or an AjaxLink works perfectly here
inside a WebMarkupContainer. But when I use an AjaxButton (with a
setDefaultFormProcessing=False), I get an error. Thanks
AjaxButton linkCopy = new AjaxButton("linkCopy") {
@Override
For example, the Panel was showing/hiding some components inside itself,
based on the selection in those components; that was working correctly.
Right now, we're using the Panel on a separate page and have an external
component that needs to respond to the events in one of the Panel's
dropdowns. W
We have a large panel containing components with multiple Ajax behaviors.
In one context where this panel is used, we need to augment (add) the
existing AjaxBehavior of a certain component by adding extra functionality
to it. It seems that if we add it the usual way (add (new
AjaxComponentUpdating
Problem solved. It had to be ".nullValid" (I was using ".null").
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So I'll try to clarify:
1) isNullValid = TRUE on this dropdown
2) I created a .properties file in the same location as the Page. Referenced
the component's full hierarchy and set ".null"
form.panel.mydropdown.null=TEST
3) This isn't working. Thanks
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Where do I put the .properties file with my custom message that overrides
"Please Choose One" for a dropdown?
I have a panel which uses this dropdown, and I created a .properties file
with the same name as the panel, in the same package. But it's not getting
activated.
(isNullValid is TRUE for th
Martin, we're already doing setOutputMarkupId(true) on both dropdowns. Is
that one different from OutputMarkupId?
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We have a DropDown whose selection affects the 2nd DropDown (hide+disable).
This is done in Ajax "onchange" on the 1st DropDown, very simple. In the
Ajax behavior, we specify
if (condition)
{
choice2.setEnabled(false); choice2.setEnabled(false);
target.addComponent(choice2);
}
else
{
choice
Sorry to keep posting, but does order matter? We're adding the validators in
all kinds of order.
Sometimes, we have a field that shows messages associated with itself, AND
its Form-level validator. But that doesn't work for other fields, which
don't show the Form-associated validator.
--
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So if I have something wrong with my field (by itself), than any Form
validators that involve it as well, won't kick in?
>From the documentation:
These validators are added to the form and only executed if all form
components returned by getDependentFormComponents() have been successfully
validate
That may be it. The Form-level ones are the ones not executing sometimes.
So to check if it's invalid, I just see if getDependentComponents() returns
NULL? And what could cause it to be NULL, if I'm specifying the right valid
components that exist on the form?
Thanks again
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We're having an issue where some of our validators aren't kicking in.
A bunch of Component- and Form-level validators are added in the page
constructor. We have output statements in each. The output shows that in
some situations some of the validators are "short-circuited" and don't get
executed e
I have a Form-level Validator which works on a pair of Date fields, and makes
sure that one can't be filled in without the other. (None or both filled in
is fine.)
The Validator is Form-level because it is multi-component; it must work
generically on any pair of Component IDs, because it's shared
We have a Web design team and a Java development team on our project. We're
using Wicket for our pages.
I know Wicket was designed to make it easy for designers and developers to
work together, but we're actually finding the opposite -- it's difficult to
communicate changes back and forth. We're f
Thanks, Variants worked.
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Is it possible to have a Panel implemented in .java which has multiple
.html's?
We have a panel with the same data but different formatting.
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I can't try right now because of a system failure.
If I could try it I wouldn't ask it here. I was hoping for a quick response.
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Sent
Suppose I have this:
arg0.add(new SimpleAttributeModifier( "onclick", "myfunction();"));
Will that replace any previous onClick's, or append to them? I need to
preserve any previous JS in this attribute (append).
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I appreciate the help so far.
A somewhat unusual question: We need a way to identify all Buttons which
don't go to the server for anything. Is there a way to identify these
"client-side-only" Buttons?
As an example, we have a Wicket Button constructed the usual way in our
form, but its only acti
Thanks for the answers so far. My latest question is, I need to check if a
cfomponent has any Ajax behaviors added to it.
For some reason, a Component does not have visitChildren() defined for it.
I see a method called contains() but you have to have a Component reference
passed to it -- all my A
Thanks. Working now.
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Thanks Duesen, but if I get the superclass, how can I actually get the type
of *this* class?
I need to find out if the anonymous class is a Button, a TextField, a Link,
etc.
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I am using the IVisitor to traverse all components on the current page. I'm
printing the class names on the console.
visitChildren(new IVisitor() {
@Override
public Object component(Component arg0) {
System.out.println(arg0.getClass().toString());
Is there a way to write out literal HTML from Wicket, without using a
?
Example: We need to go thru all our pages, and add a component. If we
were to do it the proper way we'd have to alter our HTML to add a
"wicket:id" for this . But we want a one-pass-through in the common
ancestor page that wi
I need to dynamically add a .js reference to the rendered result. In Wicket
1.5, I understand the way to do it is
(https://cwiki.apache.org/WICKET/adding-javascript-or-css-using-a-resource.html)
Question: How can I check if the .js has already been included? I don't want
to include it twice.
Hi Nick,
In the BasePage, we haven't created any of our components yet. We create
them in the Page. I need a *POST*-constructor of some kind, by which points
all the components will be created.
If I do anything in the BasePage, no components exist there yet.
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To see my usecase, look at the thread above this one, "Append JavaScript to
all Buttons/Links in App."
We need to generically append a JS reference to all buttons throughout our
app. We can do it either on the Wicket side or the JavaScript side.
- On the JavaScript side, we'd need to distinguish
I guess what I'm asking is, is there a common Post-Constructor place that
could be generically called in Wicket, where I could iterate through all
components and append a JavaScript modifier to selective ones (Button and
Link types)?
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Is there a way to tell, just by looking at the rendered HTML, whether the
component was a Wicket AjaxButton or a Wicket Button?
(All buttons may have various JavaScript appended to them, so you can't just
see if onClick is empty or not. For instance, a Button might have a Confirm
popup appended to
We are using a JS library to "veil" our forms after the user clicks Submit.
(This is done to show a busy status, and prevent the user from doing
anything else until it's done.)
The veil is not a Wicket veil -- rather, we are using a separate jQuery
library. It's working fine. We have 2 apps, one W
Thanks Sven, that was it! They were clicking again while the form was still
processing.
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Hi,
Sorry, I have to bump thread back up again. We still have no clear idea how
to address this issue, which only happens sporadically on our production
server (and we can't reproduce it locally).
We have screens with Ajax Buttons which submit forms, but also disable/hide
these Ajax buttons. I am
Thanks so much!!
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Sorry, one more question. Is it possible to know which active Page I'm
currently on during this request interception?
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Thanks, I found an example here:
http://wicket.apache.org/apidocs/1.5/org/apache/wicket/request/cycle/IRequestCycleListener.html
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What I'm looking for is some kind of an overridable onRequest() or a Request
Listener that would apply to all requests within the Wicket app.
(This must be done on the Request level, not on the Page level.)
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In Wicket, is there an easy way to override the doGet/doPost on every request
in order to add some common code that should fire on every request? I used
to know but forgot.
The idea is to add some common code e.g. database transaction start/end for
the request scope.
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(Note: In my form, I am using a CompoundPropertyModel. So my DropDownChoice
is automatically tied to the field in my bean.)
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I am in the form-construction part of my code (the Model has not been created
yet, because Submit hasn't been pressed yet).
I have a DropDownChoice, and I need to pre-select a certain item. How do I
do it? The DropDownChoice has already been constructed.
I can't do setModelObject(..) because the
Thanks
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Looking further in our code, I see that the 2nd form (which has the problem)
defines an additional Ajax "onchange" on its own, it finds the dropdown and
adds this extra Ajax code:
final DropDownChoice myDropDown =
(DropDownChoice)((Panel)get("myPanel")).get("myDropDown");
myDropDown.add(new AjaxFo
I have a reusable Panel which contains a DropDownChoice.
The DropDownChoice has an Ajax onChange action defined on it,
protected void onUpdate(AjaxRequestTarget target) {
...
}
When I add the Panel to one of my forms, the Ajax action gets invoked
correctly on the DropDown change, but when I add
It is true that we have multiple buttons on our form that we are
disabling/hiding selectively.
Our scenario: a panel that contains the button "Edit", and then when it's
clicked, the panel opens and "Edit" is replaced by two other visible buttons
- "Submit" and "Cancel". "Edit" is gone. We need thi
Thanks a lot. In our case, we have an AjaxButton that maps to a "input
type=submit".
Would using the input type "Button" get rid of this problem?
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We have an Ajax button which, when clicked, occasionally produces this
WicketRuntimeException:
ERROR [WebContainer : 17] (RequestCycle.java:1521) - Submit Button
myPanel:editButton (path=myForm:myPanel:editButton) is not enabled
org.apache.wicket.WicketRuntimeException: Submit Button myPanel:edit
We have a Form which has a regular Form Submit button (a "Button").
Inside the Form there is a Panel with various actions happening via Ajax.
The Panel has 4 dropdowns where each selection triggers create/delete of
other dropdowns. These Ajax actions are all outsourced to the Panel.
Our problem i
Problem resolved - there was another large Ajax update from another component
that was interfering and hadn't finished yet.
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Actually, the solution I found is to do this in the AjaxCheckBox's
onUpdate():
*arg0.addComponent(this);*
This works - the checkbox always returns to the correct value after
switching it. But what could possibly lead to this? Why would there be a
situation where I need to addComponent(this)?
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I have an AjaxCheckBox; when selected, several components get hidden,
otherwise the extra components are shown.
It works, but several times, when selecting the AjaxCheckBox, the extra
components go away correctly, but the value of the AjaxCheckBox quickly
changes from selected *back* to non-select
Maybe this isn't strictly a Wicket question, but I have a link from the main
page which opens a pop-up window. The pop-up has a form handled by a servlet
(in my case, a Wicket page mounted to a servlet-like URL).
Upon completing the form in the pop-up, I need to close the pop-up window
*from the s
Thanks, good solution.
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Disregard. I got everything to work by implementing IAjaxIndicatorAware.
My only remaining question is this: I see the spinner, but my cursor is
still Auto rather than Wait (Hourglass).
How do I change the cursor to Wait as long as the spinner is also spinning?
Thanks.
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Sorry, to clarify:
This guy defines AjaxIndicatingDropDownChoice as an abstract class. Why is
it abstract? I want to be able to add it to my form like a regular dropdown
choice.
And why isn't this component already available in Wicket?
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I found another user's code for an Ajax-Busy-Indicator DropDownChoice:
http://apache-wicket.1842946.n4.nabble.com/Wicket-extensions-AjaxIndicatingDropdownChoice-td3088554.html
but how do I use this code? When I construct the DropDown, I need to give it
an extra parameter, a MarkupContainer. What
I'll try the IndicatorAjax, but is there a reason for the noticeable delay?
Is it possible to configure a shorter period for Ajax updates?
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